Step 1: Replaced my factory stock 600N clutch with a Raptor 90 clutch liner, went a lot easier then I expected. I was surprised on how easy the stock clutch liner was to get out of the clutch housing, had very very little bonding agent holding the stock liner in place. Just took the blade of a new exacto knife around a couple of times and out it came. It was hard for me to comprehend that the amount of bonding agent used by the factory could hold the liner in there in the first place. There was almost no remaining glue to clean out and what was left took under a minute to completely clean out. Step 2: I chose to use a new Raptor 90 clutch liner for replacement (part#PV0324, clutch liner is a Turquoise Grn/Blue in color $10.99 for two liners.) The stock 600N clutch liner came out very clean and in one piece so I just placed the old clutch liner atop of the new Raptor 90 clutch liner (that is much larger in size) and traced a line with a ball point pin and cut the Raptor 90 liner to size, this worked perfectly. After trimming I test fit the new Raptor 90 clutch liner into the clutch housing and found that there would be no more trimming necessary. Step 3: Prep work. Upon inspection of the new Raptor 90 clutch liner I noticed that it was very shiny on both sides, as we all know a shiny and smooth surface is not ideal for bonding, to remedy this I used 320 grit sanding paper to lightly scuff up the surface I planned on gluing to the clutch housing surface, same went for the clutch housing surface, it to was generally smooth so i used 120 grit sanding paper to lightly dull the surface for good adhesion. Step 4: Gluing the liner in place, my choice of bonding agent was Devcon 30 minute Epoxy part A & B I purchased at my LHS, After rapping the 600N centrifugal clutch with about 3 turns of electrical tape i was ready to mix my Epoxy and place the new liner into the clutch housing, this is where you dont want to use to much Epoxy (big mess) and or to little (poor bonding) so I took my best guess applying the 30 minute Epoxy and placed everything together, I applied a thin film of Epoxy glue to the Raptor clutch liner massaging the Epoxy into the clutch liner material well to be sure there was good saturation and then applied a little more for good measure, same with the clutch housing. Placed it all together then slowly inserted the electrical taped centrifugal clutch into place that will firmly hold the liner in place until full cure sets in and the unit can be disassembled. Even though I was using 30 minute Epoxy I let the entire assembly cure at room temperature for 48 hours, this way I was sure that everything was 100% cured and complete adhesion was emanate. I disassembled the unit and there was just a small amount of Epoxy run out that took me a total of about 5 minutes to clean up. I sure hope I get a good amount of hours from the Raptor 90 clutch liner I installed before having to replace the clutch liner again, with the time I took for prep and proper placement I am sure the second time I go to take the liner out it wont be so easy, its really in there good! For those of you who have never replaced a clutch liner before I hope my experience helps you in your liner replacement effort. Good luck men and remember to always fly safe....Jim

Thanks for the detailed description. I have two R90 liners on order from my lhs. Unfortunately, my stock 600 clutch liner did not come out easily like yours. I actually have a good portion of it stuck on the clutch bell. It's a thin layer, but still on there good. I'm wondering if there is some type of agent I can use to soak it in and get it off easier?

I did buy an extra Align clutch bell and I was disappointed to find that it had the liner in it already. I'm contemplating taking this stock liner out and hoping that it comes off easier. Either way, I figured I'd eventually have a spare clutch bell w/ a R90 liner ready to go.